Revisión de literatura sobre el uso de pavimento asfaltico reciclado - rap en las diferentes capas de la estructura del pavimento.

Abstract

Recycled asphalt pavement (RAP) is a term used for reused asphalt layer materials that after being milled or demolished are optimized with new asphalt and aggregate materials in most of the works carried out in the country. The RAP is obtained from demolition processes of asphalt layers in service and are used in reconstruction or rehabilitation activities of pavement structures or sometimes in the granular base of the pavement structure. This RAP material, when properly crushed and screened, is mixed with asphalt and aggregates according to a working formula to obtain asphalt mixtures, but in other countries it is implemented in a more efficient way, with machinery that allows "in situ" reuse, or with other types of materials that enrich the mixture so that the reused pavement matches the properties or components of a virgin pavement. At present, the advantages of using recycled pavement materials in the construction or rehabilitation of roads are widely known; but the reality is that the use of RAP in road projects in Latin America is low; and in our country it is regulated by the general technical specifications for roads (NORMAS INVIAS), but its use in road projects is also low. With the preparation of the document, the compliance with the general road specifications established by INVIAS for the materials used in the preparation of the RAP and the evaluation of the costs per kilometer or area are addressed in order to compare the technical and economic feasibility in the rehabilitation of roads. According to the high economic cost generated by the rehabilitation of roads and the current state of the same; this research document is proposed with the aim of evaluating the economic, environmental and technical benefits of using the RAP material in the rehabilitation of roads in the region, either in the asphalt binder as it is generally used in the national territory or the implementation of the mixture in the granular material generating high ecological, economic and social impact with the various users of the roads and the community in general.